CVE-2020-3427

Duo Authentication for Windows Logon and RDP Privilege Escalation Vulnerability

Description

The Windows Logon installer prior to 4.1.2 did not properly validate file installation paths. This allows an attacker with local user privileges to coerce the installer to write to arbitrary privileged directories. If successful, an attacker can manipulate files used by Windows Logon, cause Denial of Service (DoS) by deleting file(s), or replace system files to potentially achieve elevation of privileges. Note that this can only exploitable during new installations while the installer is running and is not exploitable once installation is finished. Versions 4.1.2 of Windows Logon addresses this issue.

Category

6.6
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory duo.com
Affected: Cisco Duo Authentication for Windows Logon and RDP
Published at:
Updated at:

References

Link Tags
https://duo.com/docs/rdp-notes release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-3427?
CVE-2020-3427 has been scored as a medium severity vulnerability.
How to fix CVE-2020-3427?
To fix CVE-2020-3427, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-3427 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-3427 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-3427?
CVE-2020-3427 affects Cisco Duo Authentication for Windows Logon and RDP.
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